Symmetrical razor sharpener



March 31, 1931. ,J. HQLTZMAN 1,798,882

SYMMETRICAL RAZOR SHARPENER Originliiled Dec. 27, 1923 INVENTOR J0 wzrzMA/u A RNEY Patented Mar. 31, 1931 WWW . sure error:

JOHN HOLTZMAN, OF NEW YORK, N. Y.

SYMMETRIOAL RAZOR SHARPENER October 8, 1928.

This invention relates to razor sharpeners of the type adapted to straighten out the teeth or irregularities imparted to the sharpened edge of a razor blade as the result of use in shaving a heard in which type the means for snioothing out the irregularities on the sharpened edge of a blade is a pair of surface hard spheres forcibly held against separation and adapted to engage opposite faces of the sharpened edge of the razor blade.

The object of the invention is to cheapen and standardize the frame construction for mounting a pair of such so functioning spheres and to produce a structure embodying all the necessary functioning features which at the same time shall obviously be useful and usable interchangeably as to the presentation thereto of a razor blade. To this end it is an objective to maintain symmetry about a median plane so that there shall he obviously no left and right hand to the structure or, in other words, so that there shall be no front or each to the structure. Also, in carrying out the general objects of the invention, it is an objective that the frame for mounting such said two spher s shall itself have provisions for mounting on a support so as to preserve symmetry and at the same time provide adequate sustaining power.

The above and further objects of the invention will better be understood by reference to the following specification and will be pointed out in the following claims which are directed merely for purposes of illustration to an illustrative embodiment of the invention described in this specification in con nection with the accompanying drawinos which form a part hereof. This application a division of my co-pending application tier. No. 682,888, filed Dec. 27, 1923, for a blade sharpening device.

In the drawings Fig. 1 is a top plan View of the structure. Fig. 2 is a vertical cross section through the structure and Fig. 8 is an end elevation of the structure.

Referring now more in detail to the drawings, a substantially rectangular base member 1, preferably of metal, is provided with lateral enlargements or curved lateral extencthereto about which the entire structure is are mounted in the cups so thatexcept for friction they are permitted to roll about so Divided andthis application filed Serial No. 311,015.

sions 2 to accommodate one or morelperforatious 4: which one or more perforations are preferably located in the median plane passing between the spheres 12 and 13 and tangent preferablysymmetrical. The one orlmorc perforations l are. for the purpose ofmounting suitably securing means passing. therethro-ugh into an auxiliary support in the usualmanner except that it is preferred that they belocated. as shown in the medianplane of the structure.

At the ends of the base member 1 and preferably integral therewith are two upstanding arms 6 and 7 It is preferred that the frame comprising the base land arms 6 and 7 be constructed of metal and the structure may be weakened ifdesired bythe provision of notches Sand 9 serving to reduce the force necessary slightly toseparatethe said arms andthe parts controlledthereby. The. arms 6 and 7 sustainsymmetricallypositionedmet- :al cups 10 and 11 which 1inrturn mount apair of similar surface hard steel spheres 12yand 13 and mount them controllably against the 7 separating force of a razor blade engaging them at their point of tangency and against other forces such'as the force of gravity act ing upon the spheres. The spheres 12 and 13 that new surfaces may be presented for smoothing and sharpening the edge of-a blade. If desired anti-frictional means such as the ball bearings 14 may be interposed between -23 each sphere and the holding surface of each cup. These cups are cylindrical in form and in the embodiment illustrated are sustained by the arms 6 and 7 by means of pointed screws 16 andl'? adjustable in the arms 6 and v0 7 to facilitate effecting a control separation between the cups and in consequence between the two spheres sustained by the cups. These screws may be set in adjusted position by lock nuts 18 and 19. By means of the screws 16 P5 and 17 a nicety of adjustment of the forces tending to prevent theseparation of the spheres may be effected so that when the frame is made of cast iron an adjustment may be effected to utilize the limited resilience of cast iron without the necessity of an adjustment by bending.

WVhat I claim and desire to secure by United States Letters Patent is l. A razor sharpener structure which in its entirety is symmetrical about a median plane comprising two surface hard steel spheres juxtaposed on opposite sides of said median plane; a pair of symmetrical cups for forcibly mounting said spheres against separating and other forces; a metal frame having a substantially rectangular base member provided with curved lateral extensions to accommodate one or more screw mounting perforations which one or more perforations are located in said median plane; two integral symmetrically spaced arms upstanding from the ends of said base member for sustaining said cups, said upstanding arms having provisions for permitting a controlled separation between said cups and in consequence between said two spheres sustained by said cups.

2. lhe'structure as described in claim 1, further characterized by the fact that antifrictional means in the form of small ball bearings interposed between the opposed faces of said spheres and said cups is provided.

3. A blade sharpener comprising a bracket having means by which it may be secured to a support, said bracket having raised end elements, pivot clamp screws adjustable in said end elements, locking means for said screws, cylindrical cups carried on the points of said screws, a plurality of relatively small anti-frictional spheres in said cups and a hardened sphere of relatively large diameter seated on the balls of each cup, said larger spheres being held in peripheral contact by adjusting said screws.

4. A razor sharpener structure comprising an integral metal frame having a fiat base member adapted to be mounted in a horizontal position, having two integral upstanding symmetrical arms each making substantially a right angle with said base member;

a pair of inwardly facing cups at the upper ends of said arms with their concave cavities facing inwardly, said base also having a perforation for the passage therethrough of attaching means located substantially in the median plane between said arms and said base also having a reinforcing enlargement at the locality of said perforation; and a pair of surface hardsharpening spheres respectively sustained by said cups, the concavities of said cups cooperating to prevent the displacement of said spheres.

JOHN HOLTZMAN. 

